Draft-equalizer



M. MARTIN DRAFT EQUALIZER.

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No. 604,902. Patented May 31,1898.

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I MILES MARTIN, OF MARSHALL, INDIANA.

I D'RAFT-IEQUALIIZER.

SPECIFICATION forming part of Letters Patent No. 604,902, dated May 31,1898.

Application filed April 29, 1897. $erial No. 634,416. (No'modeL) To allwhom it may concern: forms no essential part of the present inven- Be itknown that I, MILES MARTIN, a citition. zen of the United States,residing at Marshall, Upon examination of the drawings it will in thecounty of Parke and State of Indiana, be plain that whenever the centralhorse ex have invented certain new and useful Imerts a greater forcethan the horses upon the 5 5 provements in Equalizers; and I do herebyoutside the tripletree will draw back upon declare the following to bea-full, clear, and the'singletrees,to which the outside horses are exactdescription of the invention, such as attached, and conversely wheneverthe outwill enable others skilled in the art to which side horses exerta greater force than the init appertains to make and use the same. sidehorse the tripletree will drawback upon My invention relates toequalizers; and that horse. Thus the pull of the inside horse the objectof the same is to provide an imwill be equalized with that of the twooutside proved form of equalizer attachmentinwhich horses. Further,should one of the outside the pull of the central horse shall beequalhorses pull more than the other outside horse 15 ized by the pullof the two outside horses. it will be readily seen that my arrangementMy invention consists in the novel features is such that the tripletreewill then act as an of construction hereinafter more particularlyordinary doubletree. set forth and claimed. It is obvious that means maybe provided In the accompanying drawings, forming a to allow for astronger or weaker horse in the 20 part of this specification, Figure 1is a top centeras, for instance, by shifting the pivotplan view of myimproved equalizer, and Fig. point of the attachment of the evener or by2 is a perspective view thereof. shifting the pivot of the attachment tothe Referring by numerals to the drawings, 1 tripletree. ;I have not,however, deemed it designates a tripletree, or it might be adounecessary to'show such a device here, as it is 25 bletree which itwas desired to convert by such as could be readily conceived by anymeans of my improved attachment into an one possessed of ordinarymechanical knowlequalizing device for more than two horses. edge. I donot, therefore, desire to confine 2 2 are the singletrees, connected bylinks myself to the exact form here shown and de- 3 with the extremes ofthe triple or main tree scribed, but wish to embrace in my invention 0in the usual manner. all forms which usually embody the same Coming nowmore particularly to the presgeneral characteristics as herein shown andcut invention, 4 4 are two levers pivoted at 5 described. to the top andbottom of the main tree at Having thus described my invention, whatabout the center of its length and extending Iclaim as new, and desireto secure by Letters 3 5 thence obliquely forward, and 6 6 are twoPatent, is 8 5 links pivotally connecting the front ends of 1. In athree-horse evener, the combination these levers with the center of anintermediwith the tripletree, and'two singletrees conate singletree 7adapted for the use of the nected by links with its ends; of a levercentral horse of the trio. These links 6 stand pivoted at its rear endto the center of the 0 oblique and carry the central pivot of thetripletree and extending thence obliquely o singletree 7 to a pointabout in front of the forward, a link pivoted to the front end ofcentral pivot 5 of the main tree 1. this lever and extending obliquelyforward The numeral 8 designates a yoke or clevis in the oppositedirection, an intermediate whose body stands astride the main tree,singletree pivoted to the front end of the link,

5 whose front ends are pivoted to'the levers 4:4 and pivotal connectionsbetween the vehicle about two-thirds of the distance back from and apoint on the lever one-thirdthe disthe forward pivots to the rearpivots5, and tance on the latter between its pivot to the Whose rear end isconnected with the splinter tripletree and its pivot to said link, asand bar or pole of the vehicle in any suitable for the purpose setforth.

5o manner, not necessary to be shown here, as it 2. The herein-describedequalizer attach- 10o said levers at a point one-third the distance fromthe rear to the front pivots of the latter, as and for the purpose setforth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

ment, the same comprising a pair of levers having their rear endsadapted to be pivoted to the center of the main tree and extendingthence obliquely forward, a pair of links piv- I5 oted to the front endsof the levers and extending thence obliquely forward in the oppositedirection, a singletree pivoted between the front ends of said links,and a yoke whose bodyis adapted to span the main tree, whose I rear endis adapted to be connected with the vehicle, and whose front ends arepivoted to l MILES MARTIN.

Witnesses:

P. F. OWEN, J. H. HARRISON.

